Investigators say Kaplan fathered a 3-year-old and a 6-month-old with the now 18-year-old. That young woman came into Kaplan's home after her parents reportedly "gifted" her to Kaplan.

Police say the 18-year-old's parents, Daniel and Savilla Stoltzfus, gave their daughter to Kaplan after he helped them with their financial problems. They have been charged with endangering the welfare of children. Daniel Stoltzfus is also charged with criminal conspiracy and statutory sexual assault. Philly.com reports the local district attorney said Kaplan had "brainwashed" the Stoltzfuses.

However, local media reports that authorities are struggling to confirm the identify of the girls because they can't find their birth certificates or social security cards. Investigators say they believe the girls are Amish.

"They were living down in the basement, they were hiding in the chicken coop," Lower Southampton Public Safety Director Robert Hoopes said.

A neighbor who was suspicious told KYW-TV she called the state's child abuse hotline.

"It was just an instinct. Like, I just felt like I wasn't going through another summer where everybody should be outside kinda thing and not see those little girls again," said Jen Betz, the neighbor who made the call.

WPVI reports previous calls were made to police about Kaplan's home, but the authorities never had enough evidence to enter the property because none of the complaints were for child abuse.
All three adults are each being held on $1 million bail.